74HC/HCT192 Philips Semiconductors (Acquired by NXP), 74HC/HCT192 Datasheet - Page 6

• Manufacturer Part Number: 74HC/HCT192
• Description: Presettable Synchronous BCD Decade Up/down Counter
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
December 1990
Presettable synchronous BCD decade
up/down counter
(1) Clear overrides load, data and count inputs.
(2) When counting up the count down clock input
Sequence
Clear (reset outputs to zero);
load (preset) to BCD seven;
count up to eight, nine,
count down to one, zero,
terminal count up, zero,
one and two;
terminal count down, nine,
eight, and seven.
(CP
count up clock input (CP
D
) must be HIGH, when counting down the
U
) must be HIGH.
Fig.5 Typical clear, load and count sequence.
Fig.6 Logic diagram.
6
74HC/HCT192
Product specification